From: Mike Hearn <mike@plan99•net>
To: Jeff Garzik <jgarzik@bitpay•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] deterministic transaction expiration
Date: Wed, 6 Aug 2014 15:54:56 +0200 [thread overview]
Message-ID: <CANEZrP3eEiLxYfsAURRm4ysfS4TRgXxa_THxJ43cVH1OyR95JQ@mail.gmail.com> (raw)
In-Reply-To: <CAJHLa0MfRhCPX8H92qc1kSebc=WrUzmSgbG331t4-zDHhTNu4w@mail.gmail.com>
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We could however introduce a new field in a new tx version. We know we need
to rev the format at some point anyway.
On Wed, Aug 6, 2014 at 2:55 PM, Jeff Garzik <jgarzik@bitpay•com> wrote:
> ...and existing users and uses of nLockTime suddenly become worthless,
> breaking payment channel refunds and other active uses of nLockTime.
>
> You cannot assume the user is around to rewrite their nLockTime, if it
> fails to be confirmed before some arbitrary deadline being set.
>
>
>
> On Wed, Aug 6, 2014 at 12:01 AM, Tom Harding <tomh@thinlink•com> wrote:
>
>> On 8/5/2014 12:10 PM, Kaz Wesley wrote:
>> > Any approach based on beginning a transaction expiry countdown when a
>> > transaction is received (as in mempool janitor) seems unviable to me:
>> > once a node has forgotten a transaction, it must be susceptible to
>> > reaccepting it;
>>
>> It's hard to argue with that logic.
>>
>> If nLockTime is used for expiration, transaction creator can't lie to
>> help tx live longer without pushing initial confirmation eligibility
>> into the future. Very pretty. It would also enable "fill or kill"
>> transactions with a backdated nLockTime, which must be confirmed in a
>> few blocks, or start vanishing from mempools.
>>
>>
>>
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>
>
>
> --
> Jeff Garzik
> Bitcoin core developer and open source evangelist
> BitPay, Inc. https://bitpay.com/
>
>
> ------------------------------------------------------------------------------
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> Reboot your WinForms applications with our WinForms controls.
> Build a bridge from your legacy apps to the future.
>
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next prev parent reply other threads:[~2014-08-06 13:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-01 0:58 Kaz Wesley
2014-08-01 1:06 ` Peter Todd
2014-08-01 1:37 ` Kaz Wesley
2014-08-01 1:38 ` Matt Whitlock
2014-08-01 2:28 ` Gregory Maxwell
2014-08-01 3:26 ` Matt Whitlock
2014-08-01 3:31 ` Gregory Maxwell
2014-08-05 18:01 ` Alex Mizrahi
2014-08-02 0:36 ` Tom Harding
2014-08-05 17:02 ` Flavien Charlon
2014-08-05 17:48 ` Jeff Garzik
2014-08-05 18:54 ` Mike Hearn
2014-08-05 19:08 ` Jeff Garzik
2014-08-05 19:10 ` Kaz Wesley
2014-08-05 19:36 ` Jeff Garzik
2014-08-06 4:01 ` Tom Harding
2014-08-06 12:55 ` Jeff Garzik
2014-08-06 13:54 ` Mike Hearn [this message]
2014-08-06 14:44 ` Tom Harding
2014-08-06 15:08 ` Jeff Garzik
2014-08-06 15:17 ` Christian Decker
2014-08-06 15:42 ` Peter Todd
2014-08-06 16:15 ` Jeff Garzik
2014-08-06 17:02 ` Tom Harding
2014-08-06 17:21 ` Mark Friedenbach
2014-08-06 17:34 ` Peter Todd
2014-08-06 17:24 ` Jeff Garzik
2014-08-06 16:31 ` Mark Friedenbach
2014-08-06 17:20 ` Peter Todd
2014-08-06 17:30 ` Mark Friedenbach
2014-08-06 17:38 ` Peter Todd
2014-08-08 17:38 ` Tom Harding
2014-08-08 18:13 ` Jeff Garzik
2014-08-08 18:42 ` Kaz Wesley
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